Refractor scopes refract, or bend, rays of light in order to focus and enlarge images to provide optimum optical quality. #govtRebatePopoverTrigger .a-icon-popover{display:none}#govtRebatePreloadContent{padding:2rem;height:100%;overflow-x:auto}.dp-apl-govt-rebate-prom-badge{background-color:#e31820;display:inline-block;color:#fff;font-weight:700;padding-top:1px;padding-left:4px;padding-right:4px}.apl_type_border_dotted{border-style:solid;border-color:#eda93a!important;background-color:#eda93a;border-radius:2px;border-width:1px;text-align:center;display:inline-block;width:35px}.apl_tip_title_m{display:inline-block}.apl_type{font-size:1.4rem;color:#fff}.apl_m_title{display:inline-block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:middle}.apl_non_badge{display:inline-block;margin-bottom:5px}.apl_m_atf_message{max-width:50%;display:inline-block;overflow:hidden;vertical-align:middle;white-space:nowrap;color:#0066c0!important;font-weight:700}.apl_m_atf_message_more{vertical-align:middle}.apl_trigger{cursor:pointer}.apl_redeem_hide{display:none}.apl_l_black{color:#000!important}.apl_badgeHvaCoupon_redeemed{vertical-align:top!important;padding-top:5px!important}.apl_m_atf_ajax_header{margin-left:1.4rem;margin-right:1.4rem;padding-bottom:.9rem;border-bottom:1px solid #ddd;position:relative}.apl_m_atf_ajax_header .a-spinner{position:absolute;right:.6rem;bottom:11px}.apl_m_atf_ajax_container{padding-top:0!important}.apl_redeem_hide{display:none}.apl_m_m{max-width:100%;display:inline-block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.apl_topic{font-size:20px!important;height:25px!important;line-height:25px!important}.apl_m_font_title{color:#000;font-weight:700}.apl_m_font_message{color:#000}.apl_state_font{font-size:1.8rem!important}.apl_state_font_day{font-size:1.8rem!important;color:#B12704!important}.apl_state_font_day_expire{color:#B12704!important}.apl_state_padding form{margin-bottom:0!important}.apl_td{padding:10px 0 10px 0!important;border-style:none none dashed;border-width:1px;border-color:#ddd}.apl_td1{padding:10px 0 10px 0!important}.apl_divider{margin-bottom:12px;padding-right:15px}.apl_notice{font-size:14px;line-height:22px}.apl_column{margin-left:-15px}.apl_guide{font-weight:700;font-family:verdana,arial,helvetica,sans-serif;margin-right:.2em;font-size:120%}.apl_div_line_height{margin-top:.6rem!important}.apl_image_ul{display:table;width:100%;height:70px;text-align:center;margin:13px 0 13px 0}.apl_image_ul li{list-style:none;display:table-cell;vertical-align:middle}.apl_image_div{width:70px;height:70px;display:inline-block;position:relative}.apl_image_div img{position:absolute;margin:auto;left:0;right:0;top:0;bottom:0}.apl_image_left{text-align:right}.apl_image_bundle{width:50px;text-align:center;margin:0 10px 0 10px;font-weight:700;color:#A5A3A3}.apl_image_right{text-align:left}.apl_m_atf_message{color:#0066c0!important}.apl_m_font_title{color:#000}.apl_m_font_message{color:#000}.dp-apl-govt-rebate-prom-section{padding-bottom:10px}#govtRebateLoaderDiv{margin:auto;left:0;right:0;position:fixed} The 80mm objective lens and short 400mm (f/5.0) focal length are perfect for taking in wide swaths of the heavens, making it ideal for larger deep-sky objects. Description Sky-Watcher Evostar PRO 80 mm f/7.5 ED APO OTA ED APO Sky-Watcher refractor telescopes are able to generate sharp images superior in quality to those achievable through any telescope optical design due to their nearly flawless unobstructed … SV503 80ED F7 Telescope OTA Refractor Optical Tube Achromatic White Professional (window.AmazonUIPageJS ? The 6.5 pound 80mm f/6 Astro-Tech AT80EDT ED triplet apo refractor is just that scope. The new EVOLUX 82ED continues this tradition with major enhancements including: Unparalleled levels of … AmazonUIPageJS : P).load.js('https://images-na.ssl-images-amazon.com/images/I/71EA77kZwfL.js?AUIClients/GoldboxUDPAssets&1qFPJc2X#312885-T1.315969-T1'); SKU: TAK-TTK12010-FT . GREAT PERFORMANCE. Diameter: 80mm Focal Length: 480mm Focal Ratio: f/6. Please use a different way to share. The best refractor telescopes use a long-range focal length to minimize the chance of chromatic aberration. Orion 80mm (3.15 inch) ED APO Refractor Telescope OTA We love those premium APO refractors as much as the next guy. For centuries, the fun and useful scientific devices that are known as refractor telescopes have been providing people with visual access to the wonders of outer space. #store-introduction-sheet-widget{font-size:13px;line-height:18px;font-family:"Amazon Ember",Arial,sans-serif}#store-introduction-sheet-widget .a-button{margin-left:12px;margin-right:12px} The New Lunt 70mm MT Refractor, the OTA behind the Lunt 60MT Telescope, is now available for purchase for those who want to take advantage of its World Class optics without having the hydrogen alpha module! 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